CVE-2017-15595
Description
An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Xen - Pagetable De-typing Unbounded Recursion
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.8.2+xsa245-0+deb9u1 |
| sid | Fixed | 4.8.2+xsa245-0+deb9u1 |
| forky | Fixed | 4.8.2+xsa245-0+deb9u1 |
| bullseye | Fixed | 4.8.2+xsa245-0+deb9u1 |
| bookworm | Fixed | 4.8.2+xsa245-0+deb9u1 |
References
- https://lists.debian.org/debian-lts-announce/2017/11/msg00027.html
- https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html
- https://security.gentoo.org/glsa/201801-14
- https://support.citrix.com/article/CTX228867
- https://www.debian.org/security/2017/dsa-4050
- https://www.exploit-db.com/exploits/43014/
- https://xenbits.xen.org/xsa/advisory-240.html
- https://www.suse.com/security/cve/CVE-2017-15595.html
- https://security-tracker.debian.org/tracker/CVE-2017-15595
CWEs
CWE-400
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.